Printing telegraph receiving apparatus having case grouping of characters



July 2.5, 1933. R, GRlFFn-H 1,919,885 A PRINTING TELEGRAFH lECEIVINGAPPARATUS HAVING CASE GROUPING OF CHARACTERS Filed Feb. 29, 1932 lINVENTOR -RONALD G. GRIFFITH ATTORNEY combination.

Patented July 19331 j f This invention ratte-Ste teiegraphwprint- 111gapparatus operating according to'a code lin` which` particular codesignal combinal u tions areemployed as case signalsto diifer-` @jvib"entiate, `betweendiflerent characters correslaonding to identicalsignal combinations in different case` groups.

y l, Asfthe possible number' of permutations of given `number of lsignalelements is fm "limited, it is usual when a number of selec- "tionsisrequired in excess of the maximum l ,l `possible Withanyparticular code,to extend this number'by preceding each signalcombination` or group ofsignal combinations by acase identifying signal, which may operate yaplaten or type case shift in f a, printing apviparatus." Formost-telegraphic purposes this method has been found `suiiicient toprovide t l i the numberof selections required. Forcer-l 20 tainpurposes, however, a still further numberof possible selections isrequired. This l occurs, for instance, where 1t 1s desired to adapttelegraphprlntmg apparatus for communicating intelligence in suchas"certain 5 oriental or other languages wherein selection `is requiredfrom `a `largefnumber charafcters A q `In"thisconnection it isyto `beunderstood `that although for `simplicity in the follow- `mingdescription lthe v selection of one of a t l y pluralityof printingcharacters may. be re- ",ferredfto", this is intended also toV include`gthef selection of one of a number of printer junctions such' asline andpage feed which "mi fare usuallyselected and controlled in a similarfmanner to the printing characters. Itis possible tofobtain anyrequirednumr ber ofselections without `casesignals by in-` creasing then-umherof units or elements'in 40 teachsignal combination; This has thedisadvantage of increasingJ thellne time re-` quired for thetransmission of feacli signal and' apparatus formoperating according `tol" `this code has been` well tried and Widely'exploitedn i, .i 4 i `Theobject: of theV present invention is to friimrrive 'manquant RECEIVINGAPrARArUs t, l lCminacrans t ,each n orf 'operations for each selectioneffected `ble in response to @Itiimay be/statecl therefore l `that aliveunit "code together Withqcase sig- ,i nalsihas satisfied most normalrequirements,

CROYDON, ENGLAND i i `rrnvlvcsf CAsE GRoUiINe or l Applies/tipa ineaFebruary ze, 1932; senai'No. 595,852, and iaereat Britain Novem'te e7;`1931.`

erating on a; code `having a similarly "limited number ofsignalfunitsand 'in `Which aigreat- 4er number ofselections isprovidedthan by asingle alternative case group of characters,

and `for this purpose utilizes the principleA of grouping of alliedselectable characters t in order offrequency of usage."`

sponse t'o particular settings of said series foi permutation membersfori` controlling selection `in one orjanother of two case groups group"having two selectable characters therein by saidlpermutation members,and afsecondcase shift mechanism operable Tin responseto furtherparticular' case signals controlledl through saidseries` of permutationmembers for effecting selection from "one or the other of eachtWo"said"selectable characters or operations.

t In ay preferred embodiment oflthefinven- 7 `tlon'a `printing telegraphreceiving appat l ratus' comprises a series of permutation members`operable in accordance `With the permutation elements of a signalcombination, a further permutation member operaparticular settingsofsaid VSeriesof permutation members,a plurality of selectablemembersoperable in accordance With' the setting of all of the permutationmembersalnd a case shift mechanism operable in responseto theselectionof one or another i of two selectable members for selectlngione or theother of `tvvo characters XUNITEDASTATES PATENT "OFFICE- i ffRoNALnanonce enrrrrrn, oFoaoYnoN, ENGLAND, AssrGNon TolcaEEDANn colu-` d,1=ANY, :Lmrrnnfor A correspondingto each of saidrplurality ofselectable members.

`r-tlthough, to` select certain characters by this means, two`successive case signals are required jand each of themeansiresponsive fto each casesignal repectively maybe considered as a caseshiftmechanism,the meth- "od according to the inventionas above set t forth isparticularly advantageousV as` the provision of arfurther permutationmember operable in response to a case signal received by a particularsetting of a series of similar notched members, although a species ofcase shift mechanism which is already known is in reality a meanswhereby the selection of any one of a larger number of selectablemembers can be effected as in the instancel printing apparatus accordingto the invention may be controlled the various case signals may betransmitted under the control Aof separate key levers in the keyboard,but

the invention is of particular value when used in conjunction with akeyboard controlled signal transmitting apparatus according to mycopending application Ser.

No. 595,851, filed February 29, 1932, in which apparatus the first casesignals are automatically inserted in the transmitted signals whena keyis operated in a change of case.` v

In the single figure of the accompanying drawing a persI ective view isshown of a preferred selecting mechanism together with those portions ofa printingapparatus which it is considered necessary to be shown 'forthe comprehension of the construction and mode of operation of anexample according to the present invention.

rlhe armature 1 of a signal receiving relay (not shownlactuates latchmembers 2 and interposable member 3 in response to the character ofreceived signal elements. Latch members 2 on each actuation release aclutch l for a predetermined degree of rotation, 'in this instance forhalf a revolution, in a manner already well-known. Clutchv l effects therotation of a cam sleeve 5 from a continuously rotatable driving shaft6, which is driven by means (not shown) at a speed determined by that ofthe received signal elements. Cam sleeve 5 carries a cam 7 adapted tooscillate a hammer 8 in the axial direction of the sleeve 5 in thecadence of the elements of received signals. Also carried on cam sleeve5 and fixed thereto are two discs 9 and 1() which in turn carry a seriesof rods 1l circularly arranged -around the shaft and axially movable insuitable holes in the discs 9 and 10. As the present arrangement isintended for operation according to a five unit code and as clutch l isarranged to rotate a half revolution at each release there are ten ofthese'rods 11, each pair of rods on opposite sides of a diameter of theshaft being fixed to one of a series of five cam members 12 to 16.slidable axially on sleeve 5 but rotatable therewith. Cam 7 is setrelatively to rods 11 so that hammer 8 is actuated towards each rod toeffect a striking movement during the interval in which each successiverod moves past a position opposite the hammer tip. r1`he interposablemember 3 is actuated by armature 1 either to a position between hammer 8and the path of movement of the tips of the rods so as to effect themovement of a rod by the hammer, or to a position where movement is notconveyed from thev hammer to a rod. As interposable member 3 is on anarm pivoted at 17, it will be seen that it does not impede the striking`movement of hammer 8, but'tran'sfers the movement of the hammer to theappropriate rod only when interposed therebetween.

`Each of the live cam members 12 to 1G for eachf received signalcombination are thus set in one or the other of tw'o axial positions oncam sleeve 5, in accordance with the character of the correspondingsignal elements. ln order to prevent any undesired movement of the rods,spring means, such as indicated by 18 in the drawing, may be provided to.press on one or the other side of a raised cam surface 19y on each rodto tend to hold the rod in whichever positionit is located.

Each of the cam-members 12 to 16 has two cam fingers or projections 20,21, arranged on opposite sides of a diameter, each of the series ofprojections being in line along the shaft. On either side of the shaftand cooperating with the cam projections are two series of correspondingvertical levers 22 and 23 pivoted on horizontal rods 241 and 25respectively, one series of levers being locatedv in a displacedposition -in the axial y direction of the shaft relatively to the otherseries of levers, so that when all of the cam members 12 to 16 have beenset in accordance with the elements of a received signal and preferablyjust before the cam sleeve 5 vis re-arrested on terminationof thesignal,

the double series of cam projections 2O and 21 rotate past the verticallevers and positively actuate one or the other of each pair of leversaccording to the one or other axial position to which each cam memberhas been set. A resetting bar 26 bearing a series of cam surfaces 27 isarranged to engage with Vany actuated cam member. and reset it to theunactuated position on the sleeve at any con- ,venient period during therotation of the shaft before each cam reaches the position to beactuated if selected in the next signal combination.

The upper extremities of each pair of vertical rods 22 and 23 arelocated between the sides of an actuating notch 28 of a correspondingpermutation member of which in the present case there are five, 29 to33, corresponding to the live pairs of rods and the five permutationelements of a signal combination. When therefore one or the other ofeaseshift or re-shif't signal res ectively."` In the*arrangementaccording to t pas of naar'a'aajafaa 23 is actuatedby itsassociated cam memberflQ to 16, the corresponding" permutation "bar,` ispositively actuated to one orl the other ,of

two longitudinal positions. `Lhese permuta;` Y tion bars co'foperate`with a pluralityof` trans` i verselyarraned `selectorniembers asindi-` ycatedbymem ofwhich usually `thereare` as manyas there are emissible`permutations of the settings permutation bars 29 C033, i

ers 34 to 37 for instance, but

of t e series of asfalready well-known.. It'mayhere he remarked, howeverthat forthepurposeslof f 15" the presentinvention, there is a largernum` ber 1n this series of selectable members than "i jean be providedforby the series offive memmembers to drop when an `aligned series of`bers'29 to 33 oilily,as` will hereinafterlappear. `Inthe presentlnstanceithe permutation bars are shown with square cut code notches38which permit one of the series` of transverse y notches is formed, and auniversal bar 39 "actuatedthrough the release oia clutch'40` "fwhenreleased by latch 41"which` latch is y i conveniently actuated by afcam42 on ldisc t 10 rotating with sleeve 5,` The'clutch" 40 isy"conveniently u rotating "shaft 6 from skew gears 43, as

driven u i from continuously shown.

` The "two" transverse members 34 and`i35` shownin the drawing areionlyin operative relation `withthe five vpermutation bars 29D to 33 and areselectedby 'thepa'rticular setting `,ofthese bars in response to areceived e present iny vention instead ofthes'etwo bars controllingplaten or type basketshift for change `otl y i o case` a furtherrnotchedharig is actuted to one or the other oftwo positionsthrough a`three-1armed bell crank lever 45 pivoted at 456;`

This bar 44 `co-o`perate`s with the series of `uc'itherbarsf) to`33 andnow, in eflect, makes i the` selection of 45 `other selectable` membersas i upon the setting ofa series any one of the plurality of 36 and `37depend of six insteadof five permutation `membersL ""Therefore "thejnumber of selectable members maybe ini creased to the maximum `number ofpermuta-` "V ltions afforded b the series of sixbarslnstead of five. ihis, as is well-knowinfis Npractially double that of the maximulnwnumber afforded by ythe five bars alone, and the" selecting mechanismdescribed may therefore nowbe considered asa six unit t selectingmechanism,

but of Whichlfive `permutation bars-are set in accordance with ative-unit code and the sixth "baris setin accordance with particular`settings ofthe said five membersresponsive to particular "case signals.Allbft u e-iselecting members with the exception `of, the two caseselecting bars 34 and 35 maybe as previously mentioned, under thecontrol of the sixth permutation bar.

ysettings t of u onlyv or preferably of all the`sixnfnotched`permutation bars,

and a .shoulder 47` members each control the With` the exceptionoi`those` members reserved forfcertain `rinter `funcf` tions,'such,as`lineandpagefee and further t case signals for 1nstanc`e,.eac`h`membermay be`utilized to "control a corresponding -tytpe t `baror thevparticulardegree of rotation o a type `wheel as already known, and therefore t themecha shown. t y, u

` As already nism bar in response to a case signal may be oon- `sideredto be already known in the art, but` it has an important advantage forthepurpose of the present invention in` that a further ther` series ofpossible selections characters. In th the drawing this 0f Printing uselectable members 36 "and" 37, each of which `may be selected byrparticular the first five members 29`to" 33 Ifbarl 37 forfinstanceisselected 'bylfall` ing into "an aligned seriesof'tnotches in the on`actuation of universal bar 39 the bar 37 is moved longitudinally bellcranklever48whch raises "a lever`49 pivoted at 50 and ported at thevfree the opposite `end of the of which is netfv,` furtherf4 u uintimated, the `partieulari` method of actuating a further permutation't e arrangement shown in" 1s effected under the con` onthe u bar`engages a case shift by :moving a platen or type'basket i801* i .cannowbeetfeeted, forproviding Va still 'fur-` crank lever corresponding tolever 48. t When actuated to the; raised positionlatch member 52 engagesa fixed-stopvmember 53 and maint tains theplaten inathls positionlui'itila re- 'shif't signal is received when selector barI 136 isactuated longitudinally by the universal bar 39 to effect the engagementof ashoulder 54 onbar `36 vwith the end of latch member 52 todisengageitdfromuthe fixed stop 53 and permit the position. u t i t n ,yt

It will-be `understood that forl the vmovementof a platen in this mannerto effect a change of case each ofthe plurality of selectable membersselects two printing characters platen to "resume its original ytheprinting `f oneof each pair ,uofselected t characters' beingr effectedinthe one or other position of the platen. Ifthe selectable degree ofrotation of a` type wheel two correspondingseries of printing charactersare provided on the type wheell and! the movement Aof the platen isleffeetedfrom one to the other `of each pair fof` u position.` Alterna;xtiyelyfthe" platen may reinainjstatipnary for characters in` theselected the "second case shift and the actuation of bell crank lever 48mayeffect of a type' basket or ,typeuwheel to bring the the movement oneor other ot two selectable printingcharacters to the printing position.

What is claimed is: i

l. A printingl .telegraph receiving apparatus comp-rising va seriesl ofpermutation melnbers operable in accordance withthe permutation'elements ot a signal combination,'two case groups, a irst case shirtmechanism operable in response to particular settings of said series otpermutation members for controlling selection in one or another ot twocase groups, each group having two selectable chaacters or operationsfor each'selection effected vtherein by said permutation members, and asecond case shitthmechamsm ope 'able 1n 'response to further particularcase signals controlled through v said series of permutation members foreiiecting selection from one or the other ot each two selectablecharacters or operations.

2. A vprinting telegraph receiving appa- `ratus comprising a series otpermutation members operable in'accordance with the elements ot eachsignal combination, a turther permutation member .operable in responseto particular settings of said series of permutation members, aplurality of selectable members operable in accordance ywith thesettings of all ot said permutation members, two additional selectablemembers each operable in accordance with particular settings of all ofsaid permutationv members, and a case shift mechanism operable inresponse to the selection ot one or another ot said two additionalselectable members for selecting one or the other of two characterscorresponding to each ot said plurality o1c selectable members.

3. A printing telegraph receiving apparatusfor type selecting operationsunder control oflive unit code signal combinations characterized by theusey ot siX permutation members five of which are positioned inaccordance Vwith received signal elements, means responsive toyparticular settings lot the 'other five permutation members tol p0-sition the siXth permutation member, case shift mechanism for moving aplaten or type basket, means responsive topartieular settings of thesaid siX permutation members to operate the case shift mechanism. i

fl. A printing telegraph receiving apparatus comprising `a series ot sixpermutation members live being operable in accordance with the elementsot each signal combination, two transversely arranged Imembers eachselectable in accordance with one4 of two particular settingsrespectively of said live. permutation members, a pivoted lever havingktwo arms extending on either side ot the pivotal pointand engaged bysaid two transversely arranged members respectively i to move the sixthsaid permutation member from one to the other ot two positions, a

yplurality ot selectable members operable 1n tion o't one or lanother ofsaid two additional selectable members tor selecting one orthefother ettwo characters corresponding to each of s -aid plurality otl selectablemembers.

5. A printing telegraph receiving pappa-v ratus comprising a series otpermutation members operable in accordance with the elements ot eachsignal combination, a further permutation member operable in response toparticularsettings of said series ot' members, a plurality ot selectablemembers' operable in accordance with the,l settings ot all ot saidpermutation members, a lever `moved to one position on actuation ot amember selectively controlled through said series of permutationmembers, latch means to retain said lever in the actuated position andoperable under control of a 4further selectable member to unlatch saidlever, and a case shirt mechanism moved by said lever tor selecting oneor the other ot two characters corresponding to each ot said pluralityof members.

6. A printing telegraph receiving apparatus comprising a series ot sii:permutation members live being operable in accordance with the elementsof each signal combination, two transversely arranged members eachselectable'in accordance with one ot two particular settingsrespectively oi said five permutation members, a pivoted lever havingtwo armsextending on either sidey of the pivotal point and engaged by Isaid two transversely arranged members respectively to move the sixthsaid permutation member froml one to the other of two positions, aplurality of selectable members operable in accordance with the settingsot raid series ot permutation members, two additional selectable memberseach operable inl accordance with particular settings of saidseries ofpermutation members, a lever moved to one position on actuation oi oneot said two additional selectable members, latch means to retain saidlever in the actuated position `and operable under control of the otherof said two additional selectable members to unlatch said lever, andacasev shift mechanism moved by said lever i'or selecting one or theother of two characters corresponding to each of said plurality ot'selectable members.

GEORGE GRIFFITH.

